Billie Lourd speaks out on addiction after autopsy says Carrie Fisher had cocaine in system

Get the latest from TODAY

Carrie Fisher's daughter has spoken out against the stigma of drug addiction after toxicology results revealed that Fisher had cocaine and heroin in her system at the time of her death last year.

The report from the Los Angeles County coroner's office released on Monday found that Fisher had multiple substances in her system, including cocaine, methadone, alcohol, opiates and traces of MDMA, most commonly known as ecstasy.

Carrie Fisher's daughter, Billie Lourd, released a statement after a toxicology report revealed that Fisher had cocaine and heroin in her system at the time of her death. Jordan Strauss / AP

"My mom battled drug addiction and mental illness her entire life,'' Lourd said. "She ultimately died of it. She was purposefully open in all of her work about the social stigmas surrounding these diseases.

"She talked about the shame that torments people and their families confronted by these diseases. I know my Mom, she’d want her death to encourage people to be open about their struggles. Seek help, fight for government funding for mental health programs. Shame and those social stigmas are the enemies of progress to solutions and ultimately a cure. Love you Momby."

The coroner's office said it could not determine whether the drugs contributed to the 60-year-old Fisher's death in December.

"Ms. Fisher suffered what appeared to be a cardiac arrest on the airplane accompanied by vomiting and with a history of sleep apnea," the report states. "Based on the available toxicological information, we cannot establish the significance of the multiple substances that were detected in Ms. Fisher's blood and tissue, with regard to the cause of death."

The "Star Wars" actress fell ill on a flight from London to Los Angeles and died four days later on Dec. 27. Her mother, Debbie Reynolds, died a day later.

Fisher had spoken openly about her struggles with alcohol, drugs and bipolar disorder. She chronicled her fight in her first book, "Postcards from the Edge," as well as subsequent books and a one-woman show called "Wishful Drinking."